Download JNTUH MCA 3rd Sem R17 2019 April-May 843AE Aprilmay Java Programming Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R17 2019 April-May 843AE Aprilmay Java Programming Previous Question Paper





R17

Code No: 843AE















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, April/May - 2019

JAVA PROGRAMMING

Time: 3hrs













Max.Marks:75

Note: This question contains two parts A and B.



Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B
consists of 5 Units. Answer any one full question from each unit. Each question carries
10 marks and may have a, b, c as sub questions.



PART - A



















5 ? 5 Marks = 25



1.a) What is the significance of Java virtual machine?







[5]

b) What are the uses of "final" keyword?











[5]

c) What are the methods that support interthread communication?





[5]

d) Explain Adjustment Event class.













[5]

e) What is the difference between an applet and an application.





[5]



PART - B

















5 ? 10 Marks =50



2.

List out various bitwise operators. Explain them with suitable examples.

[10]

OR

3.a)

Distinguish between data abstraction and data encapsulation.



b)

Explain about the type conversion with an example.







[5+5]



4.a) What is a package? How will you define a package and import it.





b)

What are the benefits of Inheritance?











[5+5]

OR

5.

How does Java support multiple Inheritances? Explain with an example.

[10]


6.

What are thread priorities? Explain with suitable examples.





[10]

OR

7.

Explain is Alive() and join() methods of thread class with suitable example.

[10]



8.

Distinguish between Text Field and Text Area classes. List and explain various
methods of those classes.















[10]

OR

9.

Write about layout managers.













[10]



10.

Write an applet which will scroll "Java programming" from right to left across the
applet's window.

















[10]

OR

11.

Explain J Check Box and J Radio Button classes.







[10]




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This post was last modified on 17 March 2023